2012 Calendar of Astronomical Events




    


2012 Phases of the Moon

Mountain Standard Time

The following table gives the date and time of the Moon's phases for the year. If Daylight Saving Time is in effect, add one hour to the times listed.

2012 Phases of the Moon
Mountain Standard Time
New Moon First Quarter Full Moon Last Quarter
- Dec 31 23:15 Jan 9 00:30 Jan 16 02:08
Jan 23 00:39 Jan 30 21:10 Feb 7 14:54 Feb 14 10:04
Feb 21 15:35 Feb 29 18:22 Mar 8 02:40 Mar 14 18:25
Mar 22 07:37 Mar 30 12:41 Apr 6 12:19 Apr 13 03:50
Apr 21 00:18 Apr 29 02:58 May 5 20:35 May 12 14:47
May 20 16:47 A May 28 13:16 Jun 4 04:12 p Jun 11 03:41
Jun 19 08:02 Jun 26 20:30 Jul 3 11:52 Jul 10 18:48
Jul 18 21:24 Jul 26 01:56 Aug 1 20:27 Aug 9 11:55
Aug 17 08:54 Aug 24 06:54 Aug 31 06:58 Sep 8 06:15
Sep 15 19:11 Sep 22 12:41 Sep 29 20:19 Oct 8 00:33
Oct 15 05:02 Oct 21 20:32 Oct 29 12:50 Nov 6 17:36
Nov 13 15:08 T Nov 20 07:31 Nov 28 07:46 n Dec 6 08:32
Dec 13 01:42 Dec 19 22:19 Dec 28 03:21 -

An eclipse of the Sun can only occur at New Moon (see: Solar Eclipses for Beginners), while an eclipse of the Moon can only occur at Full Moon (see: Lunar Eclipses for Beginners). In any calendar year there are a minimum of two solar and two lunar eclipses.

If an eclipse of the Sun or Moon takes place on a given date, it is noted by a character next to the date in the table above. Solar eclipses are indicated as: T=Total, A=Annular, H=Hybrid and P=Partial. Lunar eclipses are indicated as: t=Total, p=Partial, and n=Penumbral.

Phases of the Moon Photo Gallery is an image collection showing the Moon's phases over a complete synodic month.



2012 Calendar of Astronomical Events

Mountain Standard Time

The following table gives the date and time of the important astronomical events for the year. If Daylight Saving Time is in effect, add one hour to the times listed. A key to astronomical terms appears below the calendar.

2012 Calendar of Astronomical Events
January - June July - December
Date     MST   Event
        (h:m)

Jan 02  13:19  Moon at Apogee: 404580 km
    02  19:46  Jupiter 5.0°S of Moon
    04  00     Quadrantid Meteor Shower
    04  18     Earth at Perihelion: 0.98328 AU
    05  02:17  Pleiades 2.8°N of Moon
    06  00:43  Aldebaran 5.8°S of Moon
    06  07:30  Moon at Descending Node 
    09  00:30  FULL MOON 
    12  06:04  Regulus 5.9°N of Moon
    16  00:21  Spica 2.0°N of Moon
    16  02:08  LAST QUARTER MOON 
    16  12:07  Saturn 6.4°N of Moon
    17  14:28  Moon at Perigee: 369883 km
    17  23     Mercury at Aphelion 
    19  03:59  Antares 4.2°S of Moon
    19  11:26  Moon at Ascending Node 
    23  00:39  NEW MOON 
    30  07:38  Jupiter 4.5°S of Moon
    30  10:42  Moon at Apogee: 404325 km
    30  21:10  FIRST QUARTER MOON 

Feb 01  10:42  Pleiades 3.0°N of Moon
    02  09:22  Aldebaran 5.7°S of Moon
    02  13:02  Moon at Descending Node 
    07  02     Mercury at Superior Conjunction 
    07  14:54  FULL MOON 
    08  13:43  Regulus 5.8°N of Moon
    11  11:32  Moon at Perigee: 367920 km
    12  05:47  Spica 1.8°N of Moon
    12  18:08  Saturn 6.2°N of Moon
    14  10:04  LAST QUARTER MOON 
    15  09:35  Antares 4.4°S of Moon
    15  13:16  Moon at Ascending Node 
    15  17     Mars at Aphelion 
    19  13     Neptune in Conjunction with Sun 
    21  15:35  NEW MOON 
    25  14:44  Venus 3.3°S of Moon
    26  23:16  Jupiter 3.8°S of Moon
    27  07:01  Moon at Apogee: 404864 km
    28  18:46  Pleiades 3.3°N of Moon
    29  15:37  Moon at Descending Node 
    29  17:45  Aldebaran 5.4°S of Moon
    29  18:22  FIRST QUARTER MOON 

Mar 01  22     Mercury at Perihelion 
    03  12     Mars at Opposition 
    05  02     Mercury at Greatest Elong: 18.2°E
    06  23:36  Regulus 5.8°N of Moon
    08  02:40  FULL MOON 
    10  03:02  Moon at Perigee: 362401 km
    10  13:20  Spica 1.5°N of Moon
    11  00:00  Saturn 6.2°N of Moon
    13  13:41  Moon at Ascending Node 
    13  15:10  Antares 4.7°S of Moon
    14  18:25  LAST QUARTER MOON 
    19  22:15  Vernal Equinox 
    20  18     Venus at Perihelion 
    21  12     Mercury at Inferior Conjunction 
    22  07:37  NEW MOON 
    24  11     Uranus in Conjunction with Sun 
    25  16:57  Jupiter 3.1°S of Moon
    25  23:04  Moon at Apogee: 405780 km
    26  11:21  Venus 1.8°N of Moon
    27  00     Venus at Greatest Elong: 46.0°E
    27  01:56  Pleiades 3.5°N of Moon
    27  17:19  Moon at Descending Node 
    28  01:07  Aldebaran 5.2°S of Moon
    30  12:41  FIRST QUARTER MOON 

Apr 03  06:18  Venus 0.4°S of Pleiades
    03  10:10  Regulus 5.9°N of Moon
    06  12:19  FULL MOON 
    06  23:24  Spica 1.5°N of Moon
    07  07:07  Saturn 6.3°N of Moon
    07  09:59  Moon at Perigee: 358314 km
    09  17:47  Moon at Ascending Node 
    09  22:54  Antares 4.9°S of Moon
    13  03:50  LAST QUARTER MOON 
    15  11     Saturn at Opposition 
    15  19:18  Mars 0.7°N of Regulus
    18  10     Mercury at Greatest Elong: 27.5°W
    21  00:18  NEW MOON 
    21  22     Lyrid Meteor Shower
    22  06:49  Moon at Apogee: 406422 km
    23  08:15  Pleiades 3.6°N of Moon
    23  20:43  Moon at Descending Node 
    24  07:27  Aldebaran 5.0°S of Moon
    24  19:21  Venus 5.7°N of Moon
    29  02:58  FIRST QUARTER MOON 
    30  19:31  Regulus 6.1°N of Moon

May 04  10:26  Spica 1.5°N of Moon
    04  11     Eta-Aquarid Meteor Shower
    04  15:04  Saturn 6.4°N of Moon
    05  20:33  Moon at Perigee: 356954 km
    05  20:35  FULL MOON 
    07  02:43  Moon at Ascending Node 
    07  08:57  Antares 5.0°S of Moon
    12  14:47  LAST QUARTER MOON 
    13  06     Jupiter in Conjunction with Sun 
    19  09:13  Moon at Apogee: 406451 km
    20  16:47  NEW MOON 
    20  16:53  Annular Solar Eclipse; mag=0.944
    21  02:20  Moon at Descending Node 
    22  13:52  Venus 4.7°N of Moon
    27  04     Mercury at Superior Conjunction 
    28  02:43  Regulus 6.2°N of Moon
    28  13:16  FIRST QUARTER MOON 
    28  22     Mercury at Perihelion 
    31  20:24  Spica 1.5°N of Moon
    31  22:45  Saturn 6.5°N of Moon

Jun 03  06:19  Moon at Perigee: 358483 km
    03  13:38  Moon at Ascending Node 
    03  19:51  Antares 5.0°S of Moon
    04  04:03  Partial Lunar Eclipse; mag=0.370
    04  04:12  FULL MOON 
    05  18     Venus at Inferior Conjunction 
    11  02:30  Jupiter 4.7°S of Pleiades
    11  03:41  LAST QUARTER MOON 
    15  18:24  Moon at Apogee: 405791 km
    16  20:34  Pleiades 3.6°N of Moon
    17  01:23  Jupiter 1.1°S of Moon: Occn.
    17  08:43  Moon at Descending Node 
    17  17:47  Venus 2.1°S of Moon
    19  08:02  NEW MOON 
    20  10:50  Mercury 4.9°S of Pollux
    20  16:08  Summer Solstice 
    21  03:33  Venus 2.2°N of Aldebaran
    24  08:18  Regulus 6.1°N of Moon
    26  08:02  Mars 5.8°N of Moon
    26  20:30  FIRST QUARTER MOON 
    28  04:04  Spica 1.4°N of Moon
    28  05:40  Saturn 6.3°N of Moon
    30  19     Mercury at Greatest Elong: 25.7°E
    30  22:45  Moon at Ascending Node 

Date     MST   Event
        (h:m)

Jul 01  05:42  Antares 5.0°S of Moon
    01  11:01  Moon at Perigee: 362363 km
    02  07:57  Mercury 1.6°S of Beehive
    03  11:52  FULL MOON 
    04  21     Earth at Aphelion: 1.01668 AU
    08  21:13  Venus 0.9°N of Aldebaran
    10  18:48  LAST QUARTER MOON 
    11  03     Venus at Aphelion 
    11  21     Mercury at Aphelion 
    13  09:47  Moon at Apogee: 404783 km
    14  03:34  Pleiades 3.7°N of Moon
    14  13:55  Moon at Descending Node 
    14  20:02  Jupiter 0.5°S of Moon: Occn.
    15  02:40  Aldebaran 4.9°S of Moon
    15  08:29  Venus 3.8°S of Moon
    18  21:24  NEW MOON 
    21  13:52  Regulus 5.9°N of Moon
    24  15:07  Mars 4.2°N of Moon
    25  09:43  Spica 1.2°N of Moon
    25  12:29  Saturn 6.0°N of Moon
    26  01:56  FIRST QUARTER MOON 
    27  13     Delta-Aquarid Meteor Shower
    28  03:34  Moon at Ascending Node 
    28  13     Mercury at Inferior Conjunction 
    28  13:21  Antares 5.2°S of Moon
    29  01:30  Moon at Perigee: 367318 km
    29  04:45  Jupiter 4.6°N of Aldebaran

Aug 01  20:27  FULL MOON 
    02  06:36  Saturn 4.0°N of Spica
    09  11:55  LAST QUARTER MOON 
    10  03:52  Moon at Apogee: 404125 km
    10  11:12  Pleiades 3.9°N of Moon
    10  17:04  Moon at Descending Node 
    11  10:25  Aldebaran 4.8°S of Moon
    11  13:25  Jupiter 0.1°N of Moon: Occn.
    12  05     Perseid Meteor Shower
    13  12:41  Venus 0.6°S of Moon: Occn.
    13  15:45  Mars 1.6°N of Spica
    15  03     Venus at Greatest Elong: 45.8°W
    15  22:06  Mercury 3.6°N of Moon
    16  05     Mercury at Greatest Elong: 18.7°W
    17  08:55  NEW MOON 
    18  08:33  Mercury 2.1°S of Beehive
    21  15:04  Spica 1.0°N of Moon
    21  20:43  Saturn 5.5°N of Moon
    22  00:50  Mars 2.3°N of Moon
    23  12:39  Moon at Perigee: 369731 km
    24  04     Neptune at Opposition 
    24  04:38  Moon at Ascending Node 
    24  06:54  FIRST QUARTER MOON 
    24  19:02  Antares 5.4°S of Moon
    24  21     Mercury at Perihelion 
    31  06:58  FULL MOON 

Sep 06  19:08  Moon at Descending Node 
    06  23:00  Moon at Apogee: 404296 km
    07  18:23  Aldebaran 4.5°S of Moon
    08  03:59  Jupiter 0.6°N of Moon: Occn.
    08  06:15  LAST QUARTER MOON 
    10  06     Mercury at Superior Conjunction 
    12  10:09  Venus 3.7°N of Moon
    13  01:52  Venus 2.6°S of Beehive
    14  05:51  Regulus 5.9°N of Moon
    15  19:11  NEW MOON 
    17  22:05  Spica 0.8°N of Moon
    18  07:45  Saturn 5.0°N of Moon
    18  19:52  Moon at Perigee: 365749 km
    19  13:36  Mars 0.2°N of Moon: Occn.
    20  05:54  Moon at Ascending Node 
    21  00:30  Antares 5.6°S of Moon
    22  07:49  Autumnal Equinox 
    22  12:41  FIRST QUARTER MOON 
    29  00     Uranus at Opposition 
    29  20:19  FULL MOON 

Oct 01  03:56  Mercury 1.5°N of Spica
    02  20:35  Venus 0.1°S of Regulus
    03  22:15  Moon at Descending Node 
    04  17:43  Moon at Apogee: 405162 km
    05  01     Mercury 3.2° of Saturn
    05  01:58  Aldebaran 4.3°S of Moon
    05  13:50  Jupiter 0.9°N of Moon: Occn.
    08  00:33  LAST QUARTER MOON 
    11  15:52  Regulus 6.0°N of Moon
    12  12:10  Venus 6.3°N of Moon
    15  05:02  NEW MOON 
    16  18:02  Moon at Perigee: 360673 km
    16  18:43  Mercury 1.3°S of Moon
    17  11:27  Moon at Ascending Node 
    18  06:06  Mars 2.0°S of Moon
    18  07:50  Antares 5.8°S of Moon
    20  13:07  Mars 3.5°N of Antares
    20  21     Orionid Meteor Shower
    21  20:32  FIRST QUARTER MOON 
    25  01     Saturn in Conjunction with Sun 
    26  15     Mercury at Greatest Elong: 24.1°E
    29  12:50  FULL MOON 
    31  03:36  Moon at Descending Node 
    31  11     Venus at Perihelion 

Nov 01  08:30  Moon at Apogee: 406050 km
    01  08:49  Aldebaran 4.2°S of Moon
    01  17:58  Jupiter 0.9°N of Moon: Occn.
    04  22     S Taurid Meteor Shower
    06  07:32  Mercury 3.0°N of Antares
    06  17:36  LAST QUARTER MOON 
    08  01:13  Regulus 6.1°N of Moon
    11  10:52  Venus 5.3°N of Moon
    11  18:42  Spica 0.8°N of Moon
    11  21     N Taurid Meteor Shower
    13  15:08  NEW MOON 
    13  15:12  Total Solar Eclipse; mag=1.050
    13  21:37  Moon at Ascending Node 
    14  03:21  Moon at Perigee: 357361 km
    16  02:40  Mars 4.0°S of Moon
    16  18:22  Venus 3.6°N of Spica
    17  03     Leonid Meteor Shower
    17  09     Mercury at Inferior Conjunction 
    20  07:31  FIRST QUARTER MOON 
    20  20     Mercury at Perihelion 
    27  10:05  Moon at Descending Node 
    28  07:33  Pen. Lunar Eclipse; mag=0.915
    28  07:46  FULL MOON 
    28  12:35  Moon at Apogee: 406366 km
    28  15:06  Aldebaran 4.2°S of Moon
    28  17:46  Jupiter 0.6°N of Moon: Occn.

Dec 02  18     Jupiter at Opposition 
    04  16     Mercury at Greatest Elong: 20.6°W
    05  08:35  Regulus 6.1°N of Moon
    06  08:32  LAST QUARTER MOON 
    09  02     Mercury 6.3° of Venus
    09  05:04  Spica 0.8°N of Moon
    10  05:46  Saturn 4.0°N of Moon
    11  06:48  Venus 1.6°N of Moon
    11  08:57  Moon at Ascending Node 
    11  17:44  Mercury 1.1°N of Moon: Occn.
    12  16:14  Moon at Perigee: 357074 km
    12  22:18  Jupiter 4.7°N of Aldebaran
    13  01:42  NEW MOON 
    13  16     Geminid Meteor Shower
    18  02:57  Mercury 5.2°N of Antares
    19  22:19  FIRST QUARTER MOON 
    21  04:12  Winter Solstice 
    22  01     Ursid Meteor Shower
    23  20:19  Venus 5.5°N of Antares
    24  15:27  Moon at Descending Node 
    25  14:19  Moon at Apogee: 406101 km
    25  17:02  Jupiter 0.4°N of Moon: Occn.
    25  21:23  Aldebaran 4.2°S of Moon
    28  03:21  FULL MOON 

    

Astronomical Definitions

  • Perihelion - the instant when a planet is closest to the Sun
  • Aphelion - the instant when a planet is furthest from the Sun
  • Perigee - the instant when the Moon is closest to Earth
  • Apogee - the instant when the Moon is furthest from Earth
  • Inferior Conjunction - the instant when a planet passes between Earth and the Sun (Mercury or Venus)
  • Superior Conjunction - the instant when a planet passes on the opposite side of the Sun from Earth (Mercury or Venus)
  • Greatest Elongation - elongation is the apparent angle between a planet and the Sun as seen from Earth; during eastern elongation (E), the planet appears as an evening star; during western elongation (W), the planet appears as a morning star
  • Opposition - the instant when a planet appears opposite the Sun as seen from Earth
  • Conjunction - the instant when a planet appears closest the Sun as seen from Earth
  • Occultation - the Moon occults or eclipses a star or planet
  • Ascending Node - the point where a planet crosses from the southern to northern portion of its orbit
  • Descending Node - the point where a planet crosses from the northern to the southern portion of its orbit



Calendars for Other Years and Time Zones

The table below contains links to astronomical events calendars for a range of years and Time Zones. Abbreviations for the time zones are: GMT = Greenwich Mean Time, AST = Atlantic Standard Time, EST = Eastern Standard Time, CST = Central Standard Time, MST = Mountain Standard Time, PST = Pacific Standard Time, AKST = Alaskan Standard Time, and HST = Hawaiian Standard Time.

Calendar of Astronomical Events
GMT 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
AST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
EST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
CST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
MST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
PST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
AKST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
HST 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

For years or time zones not covered above, please visit SKYCAL the astronomical events calendar generator.

Accuracy

The times of astronomical events listed with a precision in hours and minutes (i.e., hh:mm) are accurate to the nearest minute. Similarly, the times of astronomical events listed with a precision in hours (i.e., hh) are accurate to the nearest hour.

A simplified solar ephemeris results an accuracy of ±0.5 hours for the perihelion and aphelion of Earth. The algorithm used in the perihelion and aphelion of the other planets is based on unperturbed elliptical orbits. For Mars, the accuracy is about 2 hours. Due to mutual planetary perturbations, the times for Jupiter may be in error by several weeks, while Saturn's times may be in error by a month. The times for Uranus and Neptune may be in error by several months. In the future, we plan to develop algorithms to improve the computed times of perihelion and aphelion of the planets.

Acknowledgements

All calculations are by Fred Espenak, and he assumes full responsibility for their accuracy. Algorithms used in predicting the phases of the Moon, eclipses and other sky phenomena are based on Astronomical Algorithms by Jean Meeus (Willmann-Bell, Inc., Richmond, 1998).

Permission is freely granted to reproduce this data when accompanied by the acknowledgment:


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